Well after taking apart the carb the other day, and finding stuff in it that I don't think should be there using one filter, I decided to try something. Today I added a fuel filter to the inlet side of the fuel pressure regulator. That inlet hose is 3/8" diameter rubber. So I the filter I added is a plastic clear filter that requires hose clamps. I have installed it and tested it and its working like it should. I will keep an eye on that from now on.